Peter Cawley

corsix.org

It was recently pointed out on lobste.rs that Zig has overhauled how its parser does operator precedence. The related documentation contains this cute little flowchart of the new operator precedence rules:

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Galois field instructions on 2021 CPUs

2022163 points41 comments Systems & Performance details

CPUs like to operate on data types such as uint8_t , uint16_t , uint32_t , and uint64_t . These data types can be viewed as integers modulo 2 8 , 2 16 , 2 32 , and 2 64 respectively. Addition and multiplication can be defined on these integers modulo 2 N in a way which is familiar to most people; for example, in…